Steering column made of plastic
a technology of steering column and plastic, applied in the direction of steering control, shaft, domestic objects, etc., can solve the problem of not being able to adjust the lengthwise of the steering column
Active Publication Date: 2018-03-20
FORD GERMANY
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- Abstract
- Description
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- Application Information
AI Technical Summary
Benefits of technology
The design provides a lightweight, torsionally rigid shaft that can compress during crashes, reducing the risk of buckling and enhancing safety by allowing the parts to move relative to each other, while maintaining structural integrity and reducing crash energy through controlled deformation.
Problems solved by technology
Due to an integral construction of the rigid steering column section and the tube shaped steering column section, there is, however, no lengthwise adjustability of this safety steering column.
Method used
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[0021]The invention relates to a shaft comprising a first part and a second part. One of the first and the second parts is tube-shaped, whereas the other pad may also be tube-shaped or of any other suitable longitudinally extended shape, such as a rod, for example. In a partial area, the two parts are pushed into each other, the other part being pushed into the tube-shaped part. This partial area in which the first and second parts are overlapping is also referred to as the overlapping area, here. Preferably, the pushed-in part is the first part. According to the present invention, however, the pushed-in part may also be the second part.
[0022]The two parts have circumferences facing each other; these are the outer circumference of the pushed-in part and the inner circumference of the tube-shaped part. Thus, preferably, these are the outer circumference of the first part and the inner circumference of the second part. However, the circumferences facing each other may also be the oute...
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Abstract
A shaft comprises two parts. One of these two parts is tube-shaped, and the other is pushed into the tube-shaped part along a main axis. The two parts are fixed to each other for rotation about the main axis and connected to each other in a gliding way along the main axis, by a spline provided between the two parts. One of the two parts comprises a plurality of elongated teeth which are parallel to the main axis and whose cross-sections decrease from the first part towards the second part. Intermediate spaces between neighboring teeth are at least as broad as the teeth. The other of the two parts, at its circumference facing the first part, is made of plastically deformable plastic material, and a counter-profile into which the teeth engage is pressed in the plastic material by intrusion of the teeth during assembly of the two parts.
Description
CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority to co-pending German Patent Application No. DE 10 2015 100 797.5 entitled “Plastiklenksäule”, filed Jan. 20, 2015.FIELD OF THE INVENTION[0002]The present invention generally relates to a shaft, particularly a steering control shaft of a motor vehicle, comprising a tube-shaped part and a pushed-in part, a spline being provided between these two parts.BACKGROUND OF THE INVENTION[0003]It is known that steering columns and particularly steering control shafts may be designed in such a way that, in case of a crash of a motor vehicle in which they are mounted, they may be deformed or telescopically pushed together and thus occupy a reduced space so that they do not put the driver at risk during the crash (“safety steering column”).[0004]German Patent Application publication DE 32 13 462 A1, corresponding to European Patent EP 0 091 671 B1, describes a safety steering column for motor vehicles which includes a ri...
Claims
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IPC IPC(8): B62D1/185F16C3/02B62D1/19F16C3/03B62D1/181F16D1/10B29C65/00B29C65/64B29L31/00
CPCB62D1/192B62D1/181B62D1/185F16C3/026B29C65/64B29C66/1122Y10T403/4966B29C66/54B29C66/612B29C66/7392B29L2031/75F16D2001/103B29C66/30321
Inventor BRAUN, MARKUSHEIDEL, JOACHIM
Owner FORD GERMANY